摘 要:介绍了一种采用集成波导作为过渡媒介的毫米波信号由同轴传输向带状线传输转换结构的设计方法。微波信号的整个传输过程包含两次变换,同轴 - 波导以及波导 - 带状线,两次变化过程中均保证了良好的接地效果,电磁屏蔽良好。采用这种结构建立了一款 27 GHz ~ 30 GHz 的同轴转带状线的模型,并加工了对背的实物测试结构,实际测试结果与仿真结果高度拟合,在 27 GHz ~ 30 GHz 的频带内回波损耗优于 -15 dB,单端口传输损耗仅为 0.5 dB,满足工程化应用的需求。
关键词:集成波导;毫米波;同轴波导转换;电磁屏蔽
DOI:10.19850/j.cnki.2096-4706.2022.10.009
中图分类号:TN928 文献标识码:A 文章编号:2096-4706(2022)10-0039-04
Design of a Coaxial to Stripline Structure with Integrated Waveguide Transition
TANG Xiaodong, ZHOU Biao, KONG Lingjia
(The 13th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050051, China)
Abstract: In this paper, a design method of millimeter wave signal conversion structure from coaxial transmission to stripline transmission using integrated waveguide as transition medium is introduced. The whole transmission process of microwave signal includes two transformations, coaxial to waveguide and waveguide to stripline. Good common ground effect and good electromagnetic shielding are ensured in both changes. A 27 GHz ~ 30 GHz model for coaxial to stripline is established by using this structure, and the back-to-back physical test structure is processed. The actual test results are highly fitted with the simulation results. In the 27 GHz ~ 30 GHz frequency band, the return loss is better than -15 dB, and the single port transmission loss is only 0.5 dB, which meets the needs of engineering application.
Keywords: integrated waveguide; millimeter wave; coaxial waveguide conversion; electromagnetic shielding
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作者简介:汤晓东(1980—),男,汉族,安徽阜阳人,高级工程师,本科,研究方向:微波毫米波系统;周彪(1986—),男,汉族,江苏镇江人,高级工程师,硕士,研究方向:毫米波相控阵系统、射频微系统;孔令甲(1989—),男,汉族,山西洪洞人,工程师,硕士,研究方向:微波毫米波电路。